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AN FMN‐PHOTOSYSTEM I PHOTOVOLTAIC CELL
Author(s) -
Gross Elizabeth L.,
Youngman David R.,
Winemiller Sandra L.
Publication year - 1978
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1978.tb07703.x
Subject(s) - photosystem ii , photosystem i , photochemistry , electron acceptor , chemistry , chlorophyll , photosystem , photovoltaic system , photosynthesis , materials science , biology , organic chemistry , biochemistry , ecology
— We have made a photovoltaic cell using Photosystem I subchloroplast particles isolated according to the method of Shiozawa et al. (1974). The particles were placed on a filter between two compartments one of which contained the electron donor, K 4 Fe(CN) 6 and the other the electron acceptor, FMN. Upon illumination with white light ( I = 80 W/m 2 ) a potential of 300 mV was observed across a 3000 Ω load resistance. Both Photosystem I photochemistry and direct photoreactions of FMN contribute to the process. A power output of 20 μW was observed for a 2 cm 2 filter containing 60 μg chlorophyll. This corresponds to 0.1 W/m 2 . The power efficiency was 0.13%. The short circuit current was 108 μA.